Follow the people · Insider
Phillip P. Chan
Phillip P. Chan files insider transactions with the SEC as a chief executive officer of Cytosorbents (CTSO). We hold 2 disclosed purchases and sales filed since 9 January 2009, 2 of them in the last 90 days.
- Files forCTSO
- Disclosed buys and sells2 in all, 2 in the last 90 days
- Last disclosure15 June 2026
Positions held
2 posts we hold — a term names its own dates; a run of filings only says when they filed- Filed 5 October 2009 — 15 June 2026Chief Executive Officer · Cytosorbents (CTSO)103 Form 4 lines · source: SEC Form 4
- Filed 31 December 2008 — 4 January 2010Interim Chief Executive Office · MedaSorb Technologies (MSBT)3 Form 4 lines · source: SEC Form 4
Everything they disclosed
106 entries, newest first — one per disclosure report, one per Form 4 line- ▲ bought on the open market 251,136 shares of CytosorbentsSEC Form 415 June 2026Common Stock · traded 12 June 2026 · filed 15 June 2026
- ▲ bought on the open market 10,333 shares of CytosorbentsSEC Form 415 June 2026Common Stock · traded 15 June 2026 · filed 15 June 2026
- was granted 100,000 shares of CytosorbentsSEC Form 420 November 2025Common Stock · traded 18 November 2025 · filed 20 November 2025
- was granted 136,400 shares of Cytosorbents (a derivative holding)SEC Form 48 August 2025Stock Option (Right to Buy) · traded 8 August 2025 · filed 8 August 2025
- was granted 105,600 shares of CytosorbentsSEC Form 48 August 2025Common Stock · traded 8 August 2025 · filed 8 August 2025
- filed a transaction coded O in 34,168 shares of Cytosorbents (a derivative holding)SEC Form 426 February 2025Series A Right Warrants (right to buy) · traded 24 February 2025 · filed 26 February 2025
- filed a transaction coded O in 34,168 shares of CytosorbentsSEC Form 426 February 2025Common Stock · traded 24 February 2025 · filed 26 February 2025
- exercised in-the-money options over 90,832 shares of Cytosorbents (a derivative holding)SEC Form 422 January 2025Subscription Rights (right to buy) · traded 17 January 2025 · filed 22 January 2025
- acquired or disposed of, other 90,832 shares of Cytosorbents (a derivative holding)SEC Form 422 January 2025Series A Right Warrants · traded 17 January 2025 · filed 22 January 2025
- acquired or disposed of, other 90,832 shares of Cytosorbents (a derivative holding)SEC Form 422 January 2025Series B Right Warrants · traded 17 January 2025 · filed 22 January 2025
- exercised in-the-money options over 90,832 shares of CytosorbentsSEC Form 422 January 2025Common Stock · traded 17 January 2025 · filed 22 January 2025
- was granted 124,000 shares of Cytosorbents (a derivative holding)SEC Form 44 April 2024Stock Option (Right to Buy) · traded 2 April 2024 · filed 4 April 2024
- was granted 96,000 shares of CytosorbentsSEC Form 44 April 2024Common Stock · traded 2 April 2024 · filed 4 April 2024
- was granted 129,998 shares of Cytosorbents (a derivative holding)SEC Form 42 April 2024Stock Option (Right to Buy) · traded 29 March 2024 · filed 2 April 2024
- ▲ bought on the open market 26,315 shares of Cytosorbents (a derivative holding)SEC Form 415 December 2023Common Stock Warrant (Right to Buy) · traded 13 December 2023 · filed 15 December 2023
- ▲ bought on the open market 75,188 shares of CytosorbentsSEC Form 415 December 2023Common Stock · traded 13 December 2023 · filed 15 December 2023
- was granted 112,000 shares of Cytosorbents (a derivative holding)SEC Form 411 July 2023Stock Option (right to buy) · traded 7 July 2023 · filed 11 July 2023
- was granted 48,000 shares of Cytosorbents (a derivative holding)SEC Form 411 July 2023Stock Option (right to buy) · traded 7 July 2023 · filed 11 July 2023
- was granted 87,000 shares of CytosorbentsSEC Form 411 July 2023Common Stock · traded 7 July 2023 · filed 11 July 2023
- exercised options over 30,500 shares of Cytosorbents (a derivative holding)SEC Form 45 April 2023Stock Option (right to buy) · traded 3 April 2023 · filed 5 April 2023
- exercised options over 30,500 shares of CytosorbentsSEC Form 45 April 2023Common Stock · traded 3 April 2023 · filed 5 April 2023
- ▲ bought on the open market 5,859 shares of CytosorbentsSEC Form 49 December 2022Common Stock · traded 8 December 2022 · filed 9 December 2022
- ▲ bought on the open market 14,291 shares of CytosorbentsSEC Form 48 December 2022Common Stock · traded 6 December 2022 · filed 8 December 2022
- ▲ bought on the open market 9,850 shares of CytosorbentsSEC Form 48 December 2022Common Stock · traded 7 December 2022 · filed 8 December 2022
- ▲ bought on the open market 35,000 shares of CytosorbentsSEC Form 412 September 2022Common Stock · traded 8 September 2022 · filed 12 September 2022
- was granted 106,000 shares of Cytosorbents (a derivative holding)SEC Form 412 August 2022Stock Option (right to buy) · traded 10 August 2022 · filed 12 August 2022
- was granted 240,000 shares of Cytosorbents (a derivative holding)SEC Form 412 August 2022Stock Option (right to buy) · traded 10 August 2022 · filed 12 August 2022
- was granted 79,000 shares of CytosorbentsSEC Form 412 August 2022Common Stock · traded 10 August 2022 · filed 12 August 2022
- ▲ bought on the open market 2,221 shares of CytosorbentsSEC Form 421 June 2022Common Stock · traded 16 June 2022 · filed 21 June 2022
- ▲ bought on the open market 16,000 shares of CytosorbentsSEC Form 410 June 2022Common Stock · traded 9 June 2022 · filed 10 June 2022
- ▲ bought on the open market 100 shares of CytosorbentsSEC Form 43 January 2022Common Stock · traded 29 December 2021 · filed 3 January 2022
- ▲ bought on the open market 9,438 shares of CytosorbentsSEC Form 43 January 2022Common Stock · traded 29 December 2021 · filed 3 January 2022
- ▲ bought on the open market 5,462 shares of CytosorbentsSEC Form 43 January 2022Common Stock · traded 30 December 2021 · filed 3 January 2022
- ▲ bought on the open market 5,000 shares of CytosorbentsSEC Form 413 December 2021Common Stock · traded 10 December 2021 · filed 13 December 2021
- was granted 72,000 shares of CytosorbentsSEC Form 414 April 2021Common Stock · traded 12 April 2021 · filed 14 April 2021
- was granted 96,000 shares of Cytosorbents (a derivative holding)SEC Form 414 April 2021Stock Option (right to buy) · traded 12 April 2021 · filed 14 April 2021
- exercised options over 14,100 shares of Cytosorbents (a derivative holding)SEC Form 47 May 2020Stock Option (right to buy) · traded 5 May 2020 · filed 7 May 2020
- exercised options over 14,100 shares of CytosorbentsSEC Form 47 May 2020Common Stock · traded 5 May 2020 · filed 7 May 2020
- was granted 80,000 shares of Cytosorbents (a derivative holding)SEC Form 43 March 2020Stock Option (right to buy) · traded 28 February 2020 · filed 3 March 2020
- was granted 60,000 shares of CytosorbentsSEC Form 43 March 2020Common Stock · traded 28 February 2020 · filed 3 March 2020
- ▲ bought on the open market 16,500 shares of CytosorbentsSEC Form 46 December 2019Common Stock · traded 6 December 2019 · filed 6 December 2019
- exercised options over 75,000 shares of Cytosorbents (a derivative holding)SEC Form 419 August 2019Stock Option (right to buy) · traded 15 August 2019 · filed 19 August 2019
- exercised options over 75,000 shares of CytosorbentsSEC Form 419 August 2019Common Stock · traded 15 August 2019 · filed 19 August 2019
- was granted 80,000 shares of Cytosorbents (a derivative holding)SEC Form 424 July 2019Stock Option (right to buy) · traded 22 July 2019 · filed 24 July 2019
- was granted 60,000 shares of CytosorbentsSEC Form 424 July 2019Common Stock · traded 22 July 2019 · filed 24 July 2019
- exercised options over 20,000 shares of Cytosorbents (a derivative holding)SEC Form 411 June 2019Stock Option (right to buy) · traded 7 June 2019 · filed 11 June 2019
- exercised options over 20,000 shares of CytosorbentsSEC Form 411 June 2019Common Stock · traded 7 June 2019 · filed 11 June 2019
- was granted 5,500 shares of CytosorbentsSEC Form 429 March 2019Common Stock · traded 4 March 2019 · filed 29 March 2019
- was granted 5,500 shares of CytosorbentsSEC Form 46 March 2019Common Stock · traded 4 March 2019 · filed 6 March 2019
- exercised options over 89,337 shares of Cytosorbents (a derivative holding)SEC Form 411 December 2018Non-Statutory Stock Option (right to buy) · traded 7 December 2018 · filed 11 December 2018
- exercised options over 89,337 shares of CytosorbentsSEC Form 411 December 2018Common Stock · traded 7 December 2018 · filed 11 December 2018
- ▼ sold on the open market 24,337 shares of CytosorbentsSEC Form 411 December 2018Common Stock · traded 7 December 2018 · filed 11 December 2018
- exercised options over 600 shares of CytosorbentsSEC Form 47 September 2018Common Stock · traded 5 September 2018 · filed 7 September 2018
- exercised options over 5,187 shares of CytosorbentsSEC Form 47 September 2018Common Stock · traded 5 September 2018 · filed 7 September 2018
- exercised options over 2,900 shares of CytosorbentsSEC Form 47 September 2018Common Stock · traded 6 September 2018 · filed 7 September 2018
- exercised options over 2,731 shares of CytosorbentsSEC Form 47 September 2018Common Stock · traded 7 September 2018 · filed 7 September 2018
- ▼ sold on the open market 600 shares of CytosorbentsSEC Form 47 September 2018Common Stock · traded 5 September 2018 · filed 7 September 2018
- ▼ sold on the open market 5,187 shares of CytosorbentsSEC Form 47 September 2018Common Stock · traded 5 September 2018 · filed 7 September 2018
- ▼ sold on the open market 2,900 shares of CytosorbentsSEC Form 47 September 2018Common Stock · traded 6 September 2018 · filed 7 September 2018
- ▼ sold on the open market 2,731 shares of CytosorbentsSEC Form 47 September 2018Common Stock · traded 7 September 2018 · filed 7 September 2018
- exercised options over 600 shares of Cytosorbents (a derivative holding)SEC Form 47 September 2018Non-Statutory Stock Option (right to buy) · traded 5 September 2018 · filed 7 September 2018
- exercised options over 5,187 shares of Cytosorbents (a derivative holding)SEC Form 47 September 2018Non-Statutory Stock Option (right to buy) · traded 5 September 2018 · filed 7 September 2018
- exercised options over 2,900 shares of Cytosorbents (a derivative holding)SEC Form 47 September 2018Non-Statutory Stock Option (right to buy) · traded 6 September 2018 · filed 7 September 2018
- exercised options over 2,731 shares of Cytosorbents (a derivative holding)SEC Form 47 September 2018Non-Statutory Stock Option (right to buy) · traded 7 September 2018 · filed 7 September 2018
- exercised in-the-money options over 8,000 shares of Cytosorbents (a derivative holding)SEC Form 414 June 2018Common Stock Warrants (right to buy) · traded 11 June 2018 · filed 14 June 2018
- exercised in-the-money options over 8,000 shares of CytosorbentsSEC Form 414 June 2018Common Stock · traded 11 June 2018 · filed 14 June 2018
- was granted 10,300 shares of CytosorbentsSEC Form 419 March 2018Common Stock · traded 15 March 2018 · filed 19 March 2018
- was granted 117,750 shares of Cytosorbents (a derivative holding)SEC Form 419 March 2018Stock Option (right to buy) · traded 15 March 2018 · filed 19 March 2018
- was granted 43,000 shares of CytosorbentsSEC Form 42 March 2018Common Stock · traded 28 February 2018 · filed 2 March 2018
- was granted 95,200 shares of Cytosorbents (a derivative holding)SEC Form 42 March 2018Stock Option (right to buy) · traded 28 February 2018 · filed 2 March 2018
- ▲ bought on the open market 3,700 shares of CytosorbentsSEC Form 48 June 2017Common Stock · traded 8 June 2017 · filed 8 June 2017
- ▲ bought on the open market 6,300 shares of CytosorbentsSEC Form 46 June 2017Common Stock · traded 5 June 2017 · filed 6 June 2017
- was granted 40,625 shares of CytosorbentsSEC Form 428 February 2017Common Stock · traded 24 February 2017 · filed 28 February 2017
- was granted 18,700 shares of CytosorbentsSEC Form 428 February 2017Common Stock · traded 24 February 2017 · filed 28 February 2017
- was granted 112,000 shares of Cytosorbents (a derivative holding)SEC Form 428 February 2017Stock Option (right to buy) · traded 24 February 2017 · filed 28 February 2017
- was granted 77,600 shares of Cytosorbents (a derivative holding)SEC Form 41 February 2017Stock Option (right to buy) · traded 30 January 2017 · filed 1 February 2017
- ▲ bought on the open market 4,600 shares of CytosorbentsSEC Form 413 December 2016Common Stock · traded 9 December 2016 · filed 13 December 2016
- ▲ bought on the open market 5,000 shares of CytosorbentsSEC Form 426 August 2016Common Stock · traded 24 August 2016 · filed 26 August 2016
- was granted 26,000 shares of CytosorbentsSEC Form 49 June 2016Common Stock · traded 7 June 2016 · filed 9 June 2016
- was granted 57,000 shares of CytosorbentsSEC Form 49 June 2016Common Stock · traded 7 June 2016 · filed 9 June 2016
- was granted 7,000 shares of Cytosorbents (a derivative holding)SEC Form 49 June 2016Stock Option (right to buy) · traded 7 June 2016 · filed 9 June 2016
- was granted 97,000 shares of Cytosorbents (a derivative holding)SEC Form 49 June 2016Stock Option (right to buy) · traded 7 June 2016 · filed 9 June 2016
- acquired or disposed of, other 9,879 shares of CytosorbentsSEC Form 46 May 2016Common Stock · traded 9 September 2015 · filed 6 May 2016
- acquired or disposed of, other 2,903 shares of CytosorbentsSEC Form 46 May 2016Common Stock · traded 30 December 2015 · filed 6 May 2016
- acquired or disposed of, other 19,757 shares of CytosorbentsSEC Form 46 May 2016Common Stock · traded 4 May 2016 · filed 6 May 2016
- exercised in-the-money options over 667 shares of CytosorbentsSEC Form 421 October 2015Common Stock · traded 19 October 2015 · filed 21 October 2015
- exercised in-the-money options over 800 shares of CytosorbentsSEC Form 421 October 2015Common Stock · traded 19 October 2015 · filed 21 October 2015
- exercised in-the-money options over 2,000 shares of CytosorbentsSEC Form 421 October 2015Common Stock · traded 19 October 2015 · filed 21 October 2015
- exercised in-the-money options over 667 shares of Cytosorbents (a derivative holding)SEC Form 421 October 2015Warrant (right to buy) · traded 19 October 2015 · filed 21 October 2015
- exercised in-the-money options over 800 shares of Cytosorbents (a derivative holding)SEC Form 421 October 2015Warrant (right to buy) · traded 19 October 2015 · filed 21 October 2015
- exercised in-the-money options over 2,000 shares of Cytosorbents (a derivative holding)SEC Form 421 October 2015Warrant (right to buy) · traded 19 October 2015 · filed 21 October 2015
- was granted 130,000 shares of CytosorbentsSEC Form 410 April 2015Common Stock · traded 8 April 2015 · filed 10 April 2015
- was granted 70,000 shares of Cytosorbents (a derivative holding)SEC Form 410 April 2015Stock Option (right to buy) · traded 8 April 2015 · filed 10 April 2015
- converted 1,061,354 shares of CytosorbentsSEC Form 429 October 2014Common Stock · traded 9 October 2014 · filed 29 October 2014
- converted 384 shares of Cytosorbents (a derivative holding)SEC Form 429 October 2014Series B 10% Convertible Preferred Stock · traded 9 October 2014 · filed 29 October 2014
- was granted 1,750,000 shares of Cytosorbents (a derivative holding)SEC Form 424 July 2014Stock Option · traded 28 March 2014 · filed 24 July 2014
- ▲ bought on the open market 1 share of Cytosorbents (a derivative holding)SEC Form 417 July 2013Convertible Note · traded 21 June 2013 · filed 17 July 2013
- ▲ bought on the open market 1,650,000 shares of Cytosorbents (a derivative holding)SEC Form 417 July 2013Warrants · traded 21 June 2013 · filed 17 July 2013
- was granted an unstated number of shares of Cytosorbents (a derivative holding)SEC Form 417 July 2013Stock Option · traded 4 April 2013 · filed 17 July 2013
- converted 100 shares of Cytosorbents (a derivative holding)SEC Form 414 February 2013Series B Convertible Preferred · traded 5 October 2009 · filed 14 February 2013
- ▲ bought on the open market 190,000 shares of CytosorbentsSEC Form 45 September 2012Common Stock, par value $0.001 per share · traded 4 September 2012 · filed 5 September 2012
- was granted 100,000 shares of Cytosorbents (a derivative holding)SEC Form 422 September 2010Convertible Note Plus Warrants · traded 17 September 2010 · filed 22 September 2010
- was granted 3,350,000 shares of Cytosorbents (a derivative holding)SEC Form 47 May 2010Stock Option · traded 5 May 2010 · filed 7 May 2010
- was granted 500,000 shares of MedaSorb Technologies (a derivative holding)SEC Form 414 January 2010Stock Option · traded 4 January 2010 · filed 14 January 2010
- was granted 2,503,858 shares of MedaSorb Technologies (a derivative holding)SEC Form 423 January 2009Stock Option · traded 8 January 2009 · filed 23 January 2009
- was granted 15,000 shares of MedaSorb Technologies (a derivative holding)SEC Form 49 January 2009Stock Option · traded 31 December 2008 · filed 9 January 2009
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.